4051ST Race Series tappet set. Short travel. +.001" OD

These Feuling Race Series short travel lifters are engineered to stabilize your valvetrain by limiting total travel to 0.115 inches. This design is crucial for high-RPM performance as it reduces oil aeration and prevents the pushrod seat from dropping on steep cam lobes. This specific kit features a +.001 inch oversized outer diameter, providing a precision fit for engines where the lifter bores are slightly out of spec. Sold as a kit, these fit 1999 to 2017 Twin Cam engines, 2000 to 2022 Sportster XL models, 2008 to 2012 XR1200, and 2000 to 2010 Buell XB models. Machined from a durable steel body with a slower bleed-down rate, they are ideal for engines running valve spring seat pressures over 185 lbs.